本文選題：超稠油油藏 + 油水倒置��； 參考：《油氣地質(zhì)與采收率》2017年05期

【摘要】：埕東油田埕911-平1塊館下段超稠油油藏高部位產(chǎn)水或高含水、低部位產(chǎn)油的"高水低油"生產(chǎn)特征明顯,存在油水倒置現(xiàn)象,但其成因尚不明確�；跍y(cè)井、錄井、實(shí)驗(yàn)及開發(fā)動(dòng)態(tài)等資料,深入分析了該油藏油水倒置的特征及成因。該區(qū)塊地面原油密度為1.007 6~1.024 8 g/cm~3,大于地層水密度,在重力的作用下,原油克服浮力和毛管壓力向構(gòu)造低部位發(fā)生二次運(yùn)移,是造成油水倒置的主要原因,利用錄井和測(cè)井等資料進(jìn)一步證實(shí)了該觀點(diǎn)。油水倒置油藏的油水分布規(guī)律與常規(guī)油藏差別較大,用于圈定常規(guī)油藏含油面積的一些原則與方法對(duì)油水倒置油藏不適用。以探明含油面積圈定為例,針對(duì)超稠油油藏復(fù)雜的油水分布關(guān)系,提出了其含油面積圈定的原則與應(yīng)注意的問題。
[Abstract]:The production characteristics of "high water and low oil" in the super heavy oil reservoir with high water production or high water cut in the lower member of block Cheng911-Ping 1 in Chengdong Oilfield are obvious, and the phenomenon of inversion of oil and water exists, but the cause of formation is still unclear. Based on the data of logging, experiment and development, the characteristics and causes of oil and water inversion in this reservoir are analyzed. The surface crude oil density of the block is 1.007 ~ 1.024 8 g / cm ~ (-3), which is larger than the formation water density. Under the action of gravity, the crude oil overcomes the buoyancy and the capillary pressure and occurs secondary migration to the lower part of the structure, which is the main cause of oil and water inversion. This view is further confirmed by logging and logging data. The oil-water distribution law of oil-water inversion reservoir is quite different from that of conventional reservoir, and some principles and methods used to delineate the oil-bearing area of conventional reservoir are not suitable for oil-water inversion reservoir. Taking the delineation of proven oil-bearing area as an example, the principle and problems of oil-bearing area delineation in ultra-heavy oil reservoirs are put forward in view of the complex oil-water distribution relationship.
【作者單位】： 中國石化勝利油田分公司勘探開發(fā)研究院;
【基金】：中國石化科技攻關(guān)項(xiàng)目“墾西油田羅322超深層低滲稠油有效開發(fā)技術(shù)”(P14009)
【分類號(hào)】：P618.13;TE345

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本文編號(hào)：1966542